Drillchem Drilling Solutions

Grey Wolf serves major and independent oil and gas companies with a fleet of nearly 130 rigs. The company offers contract oil and gas land drilling services in the United States. Located in one of the nation s most prolific natural gas regions, the company s operating divisions include south Texas, Gulf Coast, Ark-La-Tex and Mississippi/Alabama areas, west Texas and Rocky Mountains. Approximately 95 percent of the wells it drills on a day work and turnkey basis are targeted to natural gas. Grey Wolf is located in Houston.

Noble Drilling is a subsidiary of Noble Corporation, one of the largest offshore drilling contractors in the world. Noble Drilling provides diversified services for the oil and gas industry, including domestic offshore contract drilling and engineering and consulting services. The company s international contract drilling services segment conducts operations in the Middle East, Mexico, the North Sea, Brazil, West Africa, India and the Mediterranean Sea. Its domestic contract drilling services segment conducts operations in the United States Gulf of Mexico. Its technology services division provides drilling products and drilling-related software programs, well site management, project management, technical services and operations support for the company s downhole technology tools. Nobel Corporation and Noble Drilling are both located in Sugar Land, Texas. Nobel Corporation trades on the New York Stock Exchange under the ticker symbol NE.